Settings: remove stray scrollbar on the Updates sub-nav (#323)

.storage-subnav set overflow-x:hidden, which makes the browser compute
overflow-y to 'auto'; combined with the nav-links' -2px margin-bottom that
produced a stray vertical scrollbar on the sub-nav bar. Drop the overflow
clipping (only two short sub-tabs, flex-wrap:nowrap) — no scrollbar, and
the active-tab underline is no longer at risk of being clipped.

Author: marcpope

public/css/style.css

@@ -589,7 +589,9 @@ body.bg-body-secondary {
     border-bottom: 2px solid var(--bs-border-color);
     padding-bottom: 0;
     flex-wrap: nowrap;
-    overflow-x: hidden;
+    /* No overflow clipping: setting overflow-x makes the browser compute
+       overflow-y to 'auto', and the nav-links' -2px margin-bottom then
+       triggers a stray vertical scrollbar on the sub-nav bar (#323). */
 }
 .storage-subnav .nav-link {
     color: var(--bs-secondary-color);